Unfortunately, it appears that another one of the greats has left us. Oscar Bolão, was a fantastic drummer and percussionist who stood out even more so as an educator and historian in Brazilian music. His book, Batuque é Um Privilégio, is an incredibly rich resource in Brazilian rhythms and music.
I never had the privilege of meeting Oscar, but he always came across as a kind and generous person, and he was always one that I had hoped to have a lesson with one day.
Do check out the book if you have even a passing interest in Brazilian music and I'll work on getting a transcription going soon.